function SystemPrintPreview(OLECMDID) 
{ 
 //var OLECMDID = 10; 
 /* OLECMDID values: 
 * 6 - print 
 * 7 - print preview 
 * 8 - page setup (for printing) 
 * 1 - open window 
 * 4 - Save As 
 * 10 - properties 
 */try
 {
 var PROMPT = 1; // 1 PROMPT & 2 DONT PROMPT USER 
 var oWebBrowser = document.getElementById("WebBrowser1");
 if(oWebBrowser == null)
 {
 var sWebBrowser = '<OBJECT ID="WebBrowser1" WIDTH=0 HEIGHT=0 CLASSID="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"></OBJECT>'; 
 document.body.insertAdjacentHTML('beforeEnd', sWebBrowser); 
 oWebBrowser = document.getElementById("WebBrowser1");
 //WebBrowser1.outerHTML = ""; 
  }
oWebBrowser.ExecWB(OLECMDID,PROMPT);
}
catch(e){alert("Printing failed! " + e.message);}
}